Coherent bremsstrahlung and GDR width from 252Cf cold fission

Four Channels in the Fission of 252Cf

Strutinsky-type calculations indicate that the potential energy favors four channels in the nuclear fission of 252Cf. The connection of this finding with experimental results on the dis­ tribution of fragment mass, total kinetic energy, neutron multiplicities, and relative abundances is discussed. Similar calculations for 227Ac, 236U, and 258Fm show that the changing preponder­ ance of the four...

Tagging fast neutrons from a 252Cf fission-fragment source.

Coincidence and time-of-flight measurement techniques are employed to tag fission neutrons emitted from a 252Cf source sealed on one side with a very thin layer of Au. The source is positioned within a gaseous 4He scintillator detector. Together with α particles, both light and heavy fission fragments pass through the thin layer of Au and are detected. The fragments enable the corresponding fis...

Half-lives of several states in neutron-rich nuclei from spontaneous fission of 252Cf

J. K. Hwang, A. V. Ramayya, J. H. Hamilton, D. Fong, C. J. Beyer, P. M. Gore, E. F. Jones, Y. X. Luo, J. O. Rasmussen, S. J. Zhu, S. C. Wu, I. Y. Lee, P. Fallon, M. A. Stoyer, S. J. Asztalos, T. N. Ginter, J. D. Cole, G. M. Ter-Akopian, and R. Donangelo Physics Department, Vanderbilt University, Nashville, Tennessee 37235, USA Lawrence Berkeley National Laboratory, Berkeley, California 94720, U...

TEMPERATURE DEPENDENCE OF THE GDR WIDTH IN 120 Sn

Coherent Bremsstrahlung at the Bepc Collider *

Coherent bremsstrahlung (CBS) is a specified type of radiation at colliders with short bunches. In the present paper we calculate the main characteristics of CBS for the BEPC collider. At this collider dN γ ∼ 3 · 10 8 dE γ /E γ photons of CBS will be emitted for a single collision of the beams in the energy range E γ < ∼ 240 eV. It seems that CBS can be a potential tool for optimizing collision...